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Product Detailed Parameters
- Description：IC LED DRV RGLTR PWM 1A TSOT23-6
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：3V
- Voltage - Supply (Max)：22V
- Voltage - Output：-
- Current - Output / Channel：1A
- Frequency：1.6MHz
- Dimming：PWM
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6 Thin, TSOT-23-6
- Supplier Device Package：TSOT-23-6
- Grade：-
- Qualification：-
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Overview
The LM3405AXMKX/NOPB is a constant-current buck LED driver IC from Texas Instruments, designed for high-brightness LED applications. It operates with an input voltage range of 3V to 22V and delivers a regulated output current of 1A. The device features an integrated 1.6MHz switching frequency, supporting efficient power conversion in compact designs. It utilizes a TSOT-23-6 package and supports PWM dimming for brightness control. The component functions within a temperature range of -40°C to +125°C, ensuring reliability in various environments.
Feature Summary
- Integrates a 1.6MHz fixed-frequency buck regulator for efficient step-down conversion
- Provides precise constant-current regulation for driving high-power LEDs
- Supports external PWM dimming signals for adjustable brightness control
- Includes internal thermal shutdown protection for enhanced system safety
Applications
- High-power LED lighting modules
- Automotive exterior lighting systems
- Portable battery-powered LED fixtures
- General-purpose LED backlighting drivers
Procurement Notes
Verify the exact suffix 'X' indicates the reel packaging configuration as per manufacturer documentation. Confirm RoHS compliance status through official datasheets or certification documents. Ensure the ordering part number matches the specific package variant required for your PCB layout. Cross-reference with the latest TI product change notifications to confirm active production status and any pinout modifications.
Selection Notes
Select this component when a compact solution for single-channel LED driving is required. The TSOT-23-6 package suits space-constrained designs compared to larger footprints. Consider the 1A current limit and 22V maximum input voltage for compatibility with your LED string configuration. Evaluate the need for PWM dimming capabilities against analog dimming alternatives if applicable to the system architecture.
Part Context
This part belongs to the LM3405 family of LED drivers, which are optimized for cost-effective and high-efficiency lighting solutions. The LM3405 series is widely used in applications requiring simple design and robust performance. The 'X' suffix typically denotes tape-and-reel packaging, facilitating automated assembly processes in high-volume manufacturing environments.
Replacement Considerations
Direct substitutes include other LM3405 variants such as LM3405XMK/NOPB or LM3405AXMY/NOPB, depending on package requirements. Verify pin-to-pin compatibility and electrical specifications before substitution. Check for updated revisions or end-of-life notices from Texas Instruments to ensure long-term supply availability.
